| 转轮叶片裂纹声发射信号的特征提取及其传输 |
| |
| 引用本文： | 毛汉领,黄振峰. 转轮叶片裂纹声发射信号的特征提取及其传输[J]. 广西大学学报(自然科学版), 2008, 33(3) |
| |
| 作者姓名： | 毛汉领 黄振峰 |
| |
| 作者单位： | 广西大学,机械工程学院,广西,南宁,530004;广西大学,机械工程学院,广西,南宁,530004 |
| |
| 基金项目： | 国家自然科学基金，广西自然科学基金，广西教育厅科研项目 |
| |
| 摘 要： | 为了实现水轮机转轮叶片裂纹在线监测,本文对基于DSP的转轮裂纹声发射检测系统进行了软件和硬件设计,实现了对金属裂纹声发射信号进行分析并提取其信号的特征参数,然后通过蓝牙模块将特征参数传到上位机.经实验测试表明提取的声发射信号特征参数有效,数据传输误码率低.
|
| 关 键 词： | 小波分析 特征提取 蓝牙传输 |
Feature extraction of acoustic emission signals of runner blades cracks and the transmission solution |
| |
| MAO Han-ling,HUANG Zhen-feng. Feature extraction of acoustic emission signals of runner blades cracks and the transmission solution[J]. Journal of Guangxi University(Natural Science Edition), 2008, 33(3) |
| |
| Authors: | MAO Han-ling HUANG Zhen-feng |
| |
| Affiliation: | MAO Han-ling HUANG Zhen-feng(College of Mechanical Engineering,Guangxi University,Nanning 530004,China) |
| |
| Abstract: | In order to meet the requirement for the on-line monitoring on cracks in the runner blade of Francis turbine,in this paper the detecting system for acoustic emission(AE)signals based on DSP were designed on hardware and software,wavelet analysis method was used to analyze the AE signal then the characteristic parameters were extracted.The characteristic papameters were transmitted from the turning runner with the bluetooth technique,the bluetooth transmission solution were developed.The availablity and efec... |
| |
| Keywords: | wavelet analysis feature extraction bluetooth transmission |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
